Type-writing machine.



NfH. ANDERSON. TYPE WRITING MACHINE.

APPLIOATION Hmm JUNE 5, 1908.

Patented Jan. 5, 1915.

y 4 SHEETS-SHEET 1'.

N. H. ANDERSON.

TYEE. WRITING MACHINE.

APPLICATION FILED JUNE 5, 1908.

.m f. Pimm@ Jan. 5, 1915.

swims-SHEET 2.

N. H. ANDERSON.

TYPE WRITING MACHINE.

APPLICATION FILED JUNE 5,1908.

1 l 239463@ PEL-mmm M., 5, 191.52'

4 SHEETSvSHEET 3.

N. H. ANDERSW.

TYPE WRITNG MACHINE,

q @n 1 n@ APPLIGATION ULBD JUNE 5, 190s. ,DDL u l M I l 9),* Mm@ @nmentaal mn. .5, 1.1 SHE?)ISSSEUEE'I4I ."LIILS I-I. NDERSON, OF HARTFORD,CONNECTICUT, ASSIGNOR, BY MESNEASSIGN- MENTS, TO THE NOISELESSTYPEWRITER COMPANY, (OF MIDDLETOWN, CONNECTI CUT, A CORPORATION-OF'CONNECTICUT.

TYPE-WRITING MACHINE.

Application led June 5, 1908.

T0 all whom t may concern Be it known that I, NILs H. Annnnson, acitizen of theUnited States, residing at Hartford, in the county ofHartford and Stato of'Connecticut, have invented certain new and usefulImprovements in TypelVriting Machines, of which the following is a full,clear, and exact description, such as will enable others skilled in theart to vwhich it appertains to make and use the same.

rlhis invention relates to typewriting ma.- chines, and moreparticularly to a machine of' a type which is designed to effect writingwithout producing noise.

In typewriting machines as hitherto constructed, a Alarge part of thenoise incidental to the operation thereof has been produced by the'clicking of the partsof the escapement mechanism, and one ofthe objectsof my present invention is to overcome this objection and render theoperation of the esca pement mechanism substantially noiseless.

Another object is to provide an escapement whichwill be speedy, positiveand accurate in operation.

A further object of the invention is to provide escapement mechanismwherein friction between the bearing .surfaces of relatively movableparts is reduced to a minimum. Other objects will be in part obvious andin part pointed out hereinafter.

The invention accordingly consists in the features of construction,combinations of elements and arrangement of parts which will beexcn'iplified in the construction hereinafter set forth, and thescope-of the application of which will be indicated in the followingclaims.

In the accompanying drawings, wherein are illustrated two of variouspossible embodiments of my invention, Figure l is a plan view showingthe preferred embodiment of the escapement mechanism; Fig. 2 is a sideelevation thereof; Fig. 3 is a section taken on line 3 'of Fig. l,looking in the drcction of the arrow; Fig. i is a side view showing theescapement mechanism in a slightly different position than in Fig. Il;Fig. 5 a section Online 3 of Fig. l, .with the parts in the sameposition as in Fig. 4;; Fig. G is a plan view, showingthe parts .of theescapement n still another position; Fig. 7 is a sectional view, taken.on `line ofF-ig.

liatented Jau. c', serial no. 436.754.

(3; Fig. 8 is a side elevation of the mechanism shown in Fig. 6; Fig. 9is a plan view of the escapement mechanism, showing the loose dog freefrom one tooth of the escapement wheel vand moved in position to beengaged by the next tooth thereof; Fig. 10 is a sectional view taken online'lO, Fig. 9; Fig. 11 is a side view of the mechanism shown in Fig.9; Figs. l2 and 13, respectively, show plan and side views of theescapement mechanism, with the parts in the position assumed when theback spacing mechanism is operated to rotate the escapement wheel in areverse direction; Fig. le is a section taken on line 14k of Fig. 13,showing the means for actuating the movable feed-dog; Figs. 15 and 16show detail plan and end views, respectively, of the movable feed-dog;Fig. 1T is a plan View of a different embodiment of my invention; Fig.18 is a side elevation thereof, partly in section and taken on line 1S,Fig. 17. Fig. 19 isa section taken on line 19, Fig. 17'; and Figs. 20,Q1 and Q2 are plan, side` and sectional views of this embodiment, theparts being shown in a different position from that shown in Fig. 17.

Referring now to the drawings, andparticularly to the embodiment of myinvention illustrated in Figs. 1 to 1G, inclusive, 1 indicates a portionofthe framing of the machine which supports, as by means of lugs '.3 andpivot screws 3, a vibratory rocker member i. rl`his rocker men'ibercarries a fixed or detainiug dog 5 and a loose or feeddog 6 whichcooperates with an escapement wheel 7 mounted upon a shaft 3, one4 endof whichis shown mounted 'upon a pivotal support 10 suitalgily supportedin the framework of the machine. Shaft 3 isadapted Y to carry afeed-pinion which "meshes with the carriage-feed rack of the machine,these latter parts not being shown herein.

Rocker member Lvl, in the present instance, is provided witha coverplate 11 which is spaced from the rocker member and held in positionthereon, as by means of" screws 12, 13 and 14, spacing bushings 15, 16and 17 being positionedupon these pins and interposed between the rockermember and the cover plate to .hold the latter in fixed position.'.ilie-ia'eol vdog 45 is held in position upon the rocker member bymeans of clampscrews, one .of which is shown at 18 '-tlneimioii ed intoAthe rocker member, said clampscrews having reduced portions or pins 2Oand 21 extended between the rocker member and cover portion l1 whichform pivotal `slipp ortj. f or ij),Lollers and 23, respectively,

'which are interposed`betweennclier#meinber and said cover portion.Pivot' 'pins 2O Yand 2 1 are -disposed upon saidrockermemloer in an archaving. itscenter at the axis of the escapement wheel', and rollers 22and i upon a pin 27 extended between rocker meinlber d andcover plate11. When feed-dog 6 is moved upon these rollers, the same movesconcentrically with the axis of the escapement wheel, and the tooth o rpallet 28 thereof also moves-concentrically and, therefore, when engagedwith a tooth of the escape- 'ment wheel does not slide thereon, but is3e maintained in fixed relation with said tooth during `the rotation of.the escapeni'ent wheel, therefore eliminating-'any friction betweenthose parts. Y

, Feed-dog 6, upon its rear portion, is provided with-at' wiper camsurface 30; at. the

ends o f this'cam surface are formed cam stop portions' 31, and 32, thecam pato' merging into' these cani portions along stop curve portions 33and 34. The feed-dog 6- lo is actuated by the' roller 35, best shown in.F ig. 1 4, which is carried upon a spring plunger 36 which slides in acasing 37 provided upony the rocker member, said plunger being pressedforward by means of a spring 4 5 38' interposed 4between said plungerand an adjusting screw e() threaded into the casing and held in adjustedposition therein, as by means of a lock nut 41. roiler35 upon camsurface serves to force so the movable dog 6 in a direction opposite tothat. in which the escapcment wheel tends to turn, so as to move the dogtl'roni the position shown in Fig. 1 to that shown in Fig. 9, in whichlatter position the movable dog is held by the engagement of the roller35 with .the curved stop portion. Curve portion 33 is struck upon an arcof greater radius than that of roller 35, so that the dog is brought to,a position of rest gradually and in u so noiseless manner.

The pallet 28` of the movable dog 6 has the edge thereof' curved orbeveled as at i2 where the tooth of the escapement wheel slips-.from itwhen rocker member 4- is vic5 bratedto'engage the fixed dog with saidrlhe pressure of.

raeefics escapementwheel, andthe side of the pallet adjacent the fixeddog is preferably beveled as at 43; The object of this construction isto allow the tooth of the escapement wheel to start its motion graduallyas it is released from snapping sharply back with a click as the same isreleased.

ffroni-the movabledogsrnd..preveinhe dog:V

Having thus described this embodiment of my invention, theoperation-thereof may now be understood. With the parts in normalposition, as shown in Figs. 1 to 3, inelusive, a tooth 44 of theescapemcnt wheel is resting in contact with the pallet 28 of the movabledog. TWhen the rocker member d is raised, the tooth A of the escapementj wheel gradually slides over the curved releasingedge ft2 of themovable dog, as in Figs. @and 5, and, as the rocker member is furtherraised, the tooth Llei slides along the incline 43- of the feed-dogwhich is being moved in position to engage the oncoming tooth i5 -of'the escapement wheel until tooth ll-'l is engaged by the detaining dog5. The above operation is illustrated in Figs. G, 7 and .8 of thedrawings, and at this point, it may be noted that a slight drop ispreferably rovided between thc movable dog and the Xed dog, theconstruction above described, however, providing for a drop of the teethof the escapement wheel from the movable to the liXed dog in gradualmanner, and, therefore, without producing any noise. After the tooth 4lof the escapement wheel has 'been engaged by the fixed dog 5, a furthermovement of the rocker member l allows pallet 28 to slide back along theineline 43 until it is entirely released from tooth 44: and Iis carriedbackward to the )ositions shown in Figs. 9, 10 and 11 oli the drawingsby the roll 35 which engages the cam path 30 thereof. `When rockermember 4C is depressed, the next tooth 45 of the escapement wheelengages with the pallet 2S of the movable dog and forces the sainebackward, compressing spring 38 until. roller 35 reaches the .stop curve34; upon' the movable dog which has a radius slightly greater than thatof roller 35 and so gradually arrests the motion of the dog and, throughsaid dog, arresting the rotation of the escapement wheel, the partsagain coming into the'position shown in Fig. 1 with the escapernentwheel resting, as usual, upon the movable dog. The point to which rollermoves on the stop curve 34 and, therefore, the position 'in which thefeed-dog is arrested, may be determined by adjusting the tension of thespring 38 through the adjusting screw. lVhen the back-spacing mechawheelin a reverse direction, the movable dov 6 is firstmoved into theposition shown in ig. 9 of the drawings, and is then forced outwardlybythe tooth 46 of the escapement nism is actuated to rotate theeseapemcnt 4 wheel, the dog pivoting about roller 22 and compressing thespring 88, these positions of the parts being shown in Figs. l2 and-13of the dr yvingsn-As-uthe 'tooth' 46' 'of the ."tlsrba'peinent wheelescapes the pallet 28 of the movable dog, the latter drops back in frontof said tooth, the position of thel pallet being in all respects similarto that shown in Fig. 9.

G which is slotted as at 47 rides on the rollers 22 and 23, the bearingsurfaces 48 and 50 being concentric with the axis of the escapementwheel, as in the embodiment first above described. In this instance, themovable dog carries a roller 5l which is engaged by a wiper cam pivotedat 53 to the rocker member, said wiper cam having stop 52o curves 54 and55, and is pressed toward roller 5l by spring 56, the tension of whichmay be adjusted by means of a movable lplate 5T and a screw 5S whichsupports one end of said spring. The function of this 25 Wiper cam is toforce the movable dog in a direction opposite to that in which theescapement wheel turns until the` roller 5l enters stop curve 55,whereupon the movement of the dog is'gradually andlsilently arrested. InFigs. 17 to 19the partsof this embodiment of the escapement are 1nnormal positions, with the movable dog pressed backward by the tooth ofthel escapement wheel adjacent the fixed dogand the roller 5l has ridden'upon the curve 54 ot the wiper cam until brought to a gradual stop. Theexact point at which the roller is arrested by thecurve 54 may beregulated by adjusting the tooth 44 of the escapement Wheel and is thenforced back into position to receive the next tooth 45 by means of thespring' 56 and *45 cam vbringing the dogto a gradual stop.

Figs. 20, 2l and 22 illustrate the parts in the last-mentionedpositions. In this instance, the tooth of the movable dog is providedwith a squared releasing edge. Said dog may, however, be provided withthe curved or inclined form of edge if desired.

It will accordingl i be seen that I have provided mechanism well adaptedto attain, among othersthe ends and objects above enumerated inL anexceedingly simple yet ellicient manner. In each embodiment 'of theinvention above described, compara.- tivelv few parts-are employed. andthere is, therefore, little likelihood of the mechanism becoming xasilyderanged. The loose feeddog may i; bratory rocker by compressing theactuatin spring plunger to a sulicient degree to allow the end 60thereof to be withdrawn between i5 rollers 22 and26. Another advantageinn the embodiment of my invention shown in Figs 17 to 22, inclusive,the movable doge readily removed from the vi herent fin the presentconstruction is that the positionof the'movable dog with relartion tothe teeth of the escapement wheel,

or to the fixed dog may be conveniently regulated by merely manipulatingthe spring actuating devices.

It will be observed that, inasmuch as no impact or concussion of movableparts takes place in the escapement mechanism, no noise whatever can beproduced, and yet the parts will be positively and gradually arrested intheir proper positions.

s many changes could be made in the above construction and manyapparently widely different embodiments of this inventiony could be madewithout. departing from the scope thereof, it is intended that allmatter contained in the above description or shown in the accompanyingdrawings shall be interpreted as illustrative and not in a limitingsense.

Having described my invention what I claim as new and desire to secureby Letters atent is:

l. The combination in an escapement mechanism, of a spaced member, arocker member provided with a xed and a loosely mounted feed-dog, thelatter' moving conf centrically with the axis of the spaced mem ber, andmeans independent of said movable og for positioning the same.

2. In an escapement mechanism, the combination with a spaced member, ofa memer carrying a fixed and a loosely mounted feed-dog, the latterbeing concentrically movable .with the axis of said spaced mem` ber, andsjn'ing-actuated means independent of said loosely mounted dog adaptedto position the same.

In an escapement mechanisn'i, the comination with a spaced member, of arocker member' provided with a fixed detaining dog and a loosely mountedfeed-dog movable concentrically with the spaced member which effect aspacing of said spaced member'when said rocker member is actuated, and aspring-pressed member engaging said feed-dog. but independent thereof,adapted to position the same.

' In a typewriting machine, in combination, a member adapted to bespaced, means for elfecting a spacing thereof, comprising a rockermember provided with a iixed dog and a loosely mounted niovable feed-dogmoving in an arc concentric with the member adapted to be spaced, whichis adapted to be engaged with said member when said rocker member isactuated, means for conining said feed-dog upon said rocker memer, andspring-actuated means independent thereof adapted to position the same.

5. n a typewriting machine, the combination with, a member adapted to bespaced, of spacing means therefor, comprising a rocker member carrying afixed detaining llO dog and a curved loosely mounted feed-dog,

` the latter of Which is adapted to be engaged with the spaced memberand lslid thereby into adjacency With said detaining dog, and

.movable cam means mounted upon r said rocker member for arresting saidfeed-dog in such position.

' 6. 1n a typeivriting machine, the combination with a member tobespaced, of spacing means therefor, comprising a vibratory dog holdercarrying a fixed detaining dog and a loosely mounted feed-dog adaptedtov move eoncentrically about the axis of said spaced member, the latterof which is adapted to be engaged With said spaced member and movedthereby to be arrested substantially in line with the detaining dog, andmeans mounted upon said rocker member for arresting said feed-dog insuch position.

7. ln an escapement mechanism, the combination with a part to be spaced,of spac- Iing means therefor, comprising a vibratory dog .carrying'me'mber having a detaining dog fixed thereon and a feed-dog mountedthereon and movable concentrically with respect to the part to be spacedand adapted,

`ivlicn engaged jWith said member to .be spaced, to be. moved thereby toa position 30,

4ber mounted upon said vibratory member adjacent the fixed dog, and amovable memadapted to arrest a movement of the feed- .flog ivhen it hasbeen lmoved to a position v adjacent the detaining dog.

35 l bination with a part to be spaced, of spac- 8. ln vanescapementmechanism, the coin- Aing means therefor, comprisinga/vibratory -dog carrier, a fixed dog Imounted thereon, a looselymounted dog carried thereby which is movable concen-tiically'with theaxis of s pairof spaced cam projections and a cam path `extended betweensaid projections, and movable means mounted upon said dog-carrier,vadapted to vtraverse said cam path :to move,v the said dog and to engage said projections to 'arrest a.'movement thereof in Y, eitherdirection Without impact 0i` concus- 60 sion.

l0. In an escapement mechanism, the combinatiom of a member to bespaced, a rocker member, a .feed-dog loosely mounted 'thereon andcapable of occupying different positions concentrically with the axis ofsaid spaced member, and cam stop mechanism for limiting the movementthereof 1n such positions.

l1. 'In an escapement mechanism, the combination, of a member to bespaced a f' l I Y 'Xu 1l'1, l Hl` l rocker member, a Afeed-dog looselyinoun ed thereon and capable of occupying different positions concentricwith the axis of the member to be spaced, said feed-dog being providedwith a cam path, and spring-actuated means mounted iipon said rockermember adapted to traverse said cam path as the dog is moved to positionsaid dog with respect to the member to be spaced.

12. In an escapement mechanism the combination of a spaced member, arocker meinber provided with a fixed feed-dog, a feeddog loosely mountedthereon and capable of occupying di'erent positions, said feed-dog beingprovided with a cam portion and a springpressed plunger provided `with aroller which traverses said cam portion to move said dog, and meansformed upon said dog, With which said roller engages 'to limit themovement of said dog in either direction.

13. In an escapement mechanism,the coinbinatioii of a spaced member, arocker member provided with a fixed detaining dog, a feed-dog looselymounted upon said spaced member and having a portion thereof formed.concentri'eally with the axis of said spaced member, means upon saidrocker member with which the concentrically formed portion of Saidfeed-dog engages and upon which the latter rides, said feedi dog beingprovided with a cam portion and a rotatively mounted spring-pressedmember which engages said cam portion to move said dog and to positionthe same with respect to said spaced member.

`14. In an escapement mechanism for t peivriting machines, thecombination, 'o an escapeinent wheel adapted to be connected ivith thepart to be spaced, a ,vibratory member provided with a fixed detainingdog, a looselymounted dog carried by said vibratoiy member and adaptedto inove thereon concentrieally with the axis of said escapement wheeland adapted, when engaged with said escapeinent Wheel, to bemovedthereby into adjacency with said fixed dog, said dog being provided witha cam path, and a spring-pressed member adapted to engage said cam pathto move said dog and position the saine With respect to the teeth ofsaid escape-ment wheel.

i5. In an escapement mechanism for typeivi'iting machines, thecombination of an escapement Wheel adapted to be connected with a partto be spaced, a vibratory meinber provided with a, fixed detaining dog,a loosely mounted dog carried by said vibratory member, means forguiding said dog,

whereby the same moves upon said dog carllz.

y hav ntf rier concentrically with the aXis of said escapement wheel,and cam means for moving" said dog into position to engage a tooth ofsaid wheel and for arresting' said dog in such position.

16. In an escapement mechanism for typewriting machines, thecombination, of a vibratory dog carrier carrying` a fixed detainingTdog', and a movable feed-dog, said feeddofg beingr provided with a campath and a' cam portion disposed at either end of said cam path, aspring-pressed plunger provided with a roller mounted upon said dogcarrier, said roller engaging' said cam path to move said dog intoposition to engage a tooth to move said doe; in'one direction, andengagingI one of said cam projections to arrest the same in suchposition,

said roller beine` adapted to engage the other of 'said cam projectionsand arrest the movement of said dog' when the same is moved in anopposite direction.

' 17. In an escapement mechanism for typewriting machines thecombination, of anv escapement wheel adapted to be operatively connectedwith the part to be spaced, a vibratory 'dog carrier, a fixed detainingfeed` dog mounted thereon, a feed-dop` mounted upon said dog carrier andmovable thereon concentrically with 'the axis of said escapement wheel,rollers mounted upon said escapement Wheel upon which said dog travelsand which operate to g'uidethe same, said dog being provided with a4cazfn path and having a plurality of oppositely disposed cam portions,a spring-pressed plunger mounted upon said dos; holder and provided witha roller which is adapted to traverse said cam path., whereby said dogwill be moved in one direction to position the same with respect to theteeth of said escapement wheel, said roller being adaptedto engage saidcam path and arrest the movement of said dog when the latter has beenengaged with the teeth of said escapement Wheel and moved into adjacencywith the fined dog.

18. bination with the escapement Wheel adapted to be connected with apart to be spaced,

wheel, a

ln a typewritinp; machine, the comi of a vibratory dog carrier, a fixeddetainingl dog mounted thereon, a plurality of guide rollers carried bysaid dog; carrier, a movable feed-dog interposed between said guiderollers and adapted to ride thereon, said feed-dog being' provided witha pair of cam projections between which is interposed a cam path, aspring-pressed plunger having a roller coperating with said cam path tomove said dog; and cooperating With said cam projections to arrest themovements of said 'dog in eitherdirection without impact or concussion.

19. In a typewriting machine, the combination with an escapement wheeladapted to be connected with a part to bev spaced, of

a vibratorv do@ carrier rovided with ay fixed detainng; dog, a feed-dogloosely mounted upon said dog carrier, having 'oppositely locatedportions disposed concentrically with the axis of said escapement edupon said escapement Wheel and engaging said lcon'centrically disposedportlons, said ."t'eed-dop, being provided with a cam path and a camprojection located at either end of said cam path and into which saidcam path merges, a spring-pressed plunger mounted upon said dog carrier,a roller carried by said plunger and traversing said cam path to movesaid dog;r into position to engage with one of the teeth of saidescapement Wheel, the engagement ofsaid roller with the cam projectionat one end of said cam path being adapted to arrest the movement of saiddog when moved to such position, said feed-dog, when engaged with atooth of said eseapement wheel, being adapted 'to be moved in anopposite dlrection,

whereby said roller traverses said cam lpath as the dogs,1 is moved andengages the other of said cam projections whereby the movement oit saiddog is arrested.

ln testimony whereof I affix my signature, in the presence of twoWitnesses.

Nl'LS H. ANDERSON. ,Witnesses C.V H. Winsen,- H. M. SnAMANs.

plurality of guide members mount-

